Creasing or ornamenting leather



UNITED STATES PATENT OEEroE JAMES M. BENT, OF WAYLAND, MASSACHUSETTS.

CREASING OR ORNAMENTING LEATHER.

Specification forming part of Letters Patent No. 58,761, dated October 16, 1861i.

To all whom it may concern:

Be it known that I, JAMES M. BENT, of Wayland, in the county of Middlesex and State of Massachusetts, have invented a new Machine for Creasin g or Ornamentin g Leather, of which the following is a full, clear, and exact description, reference being had to the accom panying drawings, making part of this speciication, in which- Figure l is a perspective view of my new machine. Fig. 2 is a vertical section through a portion of the machine on the line :c a: of Fig. l. Fig. 3 is a vertical section of a .portion ofthe machine on the line yy of Fig. 2.

My invention has for its object to produce a machine for creasing' or ornamentin g leather, Which will adapt itself` to leather of various thicknesses7 and will perform the operation more rapidly and in a more permanent and thorough manner than the hand-tool ordinarilyT employed for this purpose; and my invention consists in a revolving creaser, in connection with a self-adj ustin g pressure-roll which is hun g in movable bearings and forced up to the creaser by a spring or its equivalent, so that the creaser will act equally well on different thicknesses of leather.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawings, A is the bed of the machine, from which rise the standards BC, from which project the arms D in bearings, at the end of which runs the driving-shaft E, which carries the driving-wheel F and also the pulley G, from which motion is communicated by means of a belt, a, to the small pulley H on a shaft, b, which runs in bearings c, secured to the upper ends of the standards B G.

The shaft b carries at one end a circular creaser, I, having grooves of the required form cut in it, as seen in Figs. l and 3, and this creaser is made removable, so that it can be replaced by another of a different pattern when desired.

K is a smooth pressure-roll, which is secured to the outer end of a shaft, L, by means of screw-nuts 4 and 5, and this shaft L runs in movable boxes 6 d, the former of which plays up and down between the standards B, and is forced up by a spiral spring, M, while the latter is pivoted between the standards C.

The shaft L carries at the end opposite to the pressure-roll K alarge grooved pulley, N,\vhich is driven by means of a belt, e, from the smaller pulley O on the end of the driving-shaft E. The lower end of the spring M, which forces up the pressure-roll K, rests on a lever, P, which is pivoted to lugs f and is provided with a set-screw, g, the lower end of which rests on the bed A, and by turning this screw the lever P is raised or lowered so as to vary the pressure of the spring on the sliding box 6. The position of the pressure-roll K on its shaft L may be varied by means of the screw-nuts 4 and 5, as seen in Fig. 3.

Q is a curved bifurcated lever, which is pivoted to one of the standards B at h, Fig. 2,

and rests near the center on the sliding box 6, while its outer end is raised or lowered by turning a set-screw, t', which works in a piece, 7c, projecting from the opposite standard B. The distance of the pressure-roll K from the creaser I can thus be regulated as required for different thicknesses of leather. The machine, however, would operate well if this lever Q were dispensed with, as the spring pressure roll would accommodate itself to leather of different thicknesses; but I find in practice that it is better that the distance of the roll K from the creaser should correspond in a measure to the thickness of the leather being oper? atedupon.

l is a guide or gage to regulate the distance of the creaser from the edge of the leather, and this gage is made adjustable by means of the set-screw m.

The creaser I is made to revolve very much more rapidly than the pressure-roll K, so as to Wear into the leather and thus render the creaser more permanent.

By the employment of the abovedescribed machine the work can be performed in a thorough and permanent manner and with great rapidity 5 and the machine is of simple construction, and not liable to get out of re pair.

.eenen WVhatelnlm as myiuveution, and desire 3. The gage 1,iu combination with the to secure by Letters Patent, is ereaser I and pressure-roll K, substantially,T

1. The revolving crea-ser I, in combination' as set forth.

with the self-adjusting pressure-roll K, Operf ating substantially as described, for the pur- JAMES M. BENT.

pose set forth.

2. In combination with the above, the lever Witnesses:

Q, 0r its equivalent, substantially as and for P. E. TESCHEMAOHER,

the purpose described. 'W. J. CAMBRIDGE. 

